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sci prac Flashcards

1
Q

how to state observations : adding solutions

state example

A

possibilities:
♡ state colour of ppt
♡ state initial colour of solution, then final colour

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2
Q

how to state observations : test for gas

state example

A

must record
♡ effervescence
♡ colour of gas
♡ smell of gas
♡ specific test for gas

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3
Q

how to state observations : heating of solid

state example

A

possibilities:
♡ change in colour of solid (before and after)
♡ change of state
♡ colour of residue on cooling

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4
Q

how to state observations : adding solid to solutions

state example

A

must record:
♡ solubility of solid in water
♡ colour of the solution formed

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5
Q

how to state observations : universal indicator

state example

A

record colour change of universal indicator

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6
Q

what is the test for oxygen

state entire procedure

A
  1. light a wooden splint
  2. put it out so that it glows
  3. put it into the test tube where oxygen is being tested for
  4. if it relights, there is oxygen
  5. repeat process as needed
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7
Q

what is the test for hydrogen

state entire procedure

A
  1. light a wooden splint
  2. put it into the test tube where hydrogen is being tested for
  3. if it extinguishes with a ‘pop’ sound, there is hydrogen
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8
Q

what is the test for carbon dioxide

A
  1. bubble gas from one test tube into another test tube with limewater
  2. observe the test tube with limewater, effervescence and white ppt should be observed
  3. if the above has been observed, there is carbon dioxide
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9
Q

balancing equations : acid + metal = ?

A

H2 + salt

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10
Q

balacing equations : acid + carbonate = ?

A

H2O + CO2 + salt

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11
Q

balancing equations : acid + alkali = ?

A

H2O + salt

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12
Q

what is hydroxide’s chemical equation + charge

A

(OH)-

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12
Q

what is nitrate’s chemical equation + charge

A

(NO3)-

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13
Q

what is sulfate’s chemical equation + charge

A

(SO4)2-

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14
Q

what is carbonate’s chemical equation + charge

A

(CO3)2-

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15
Q

what is ammonium’s chemical equation + charge

16
Q

what is the chemical formula for hydrochloric acid

17
Q

what is the chemical formula for sulfuric acid

18
Q

what is the chemical formula for nitric acid

19
Q

what is the chemical formula for sodium hydroxide

20
Q

what is the chemical formula for potassium hydroxide

21
Q

what is the chemical formula for calcium hydroxide

22
Q

what is the chemical formula for cesium hydroxide

23
Q

what is the chemical formula for aluminium hydroxide

24
Q

what is the chemical formula for calcium carbonate

25
Q

name the types of reactions

A

combustion
oxidation
decomposition
precipitation
neutralisation

y2 sci (6 decks)

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